In a word, neither death, nor exile, nor pain, nor anything of this kind is the real cause of our doing or not doing any action, but our inward opinions and principles.
καὶ ἁπλῶς οὔτε θάνατος οὔτε φυγὴ οὔτε πόνος οὔτε ἄλλο τι τῶν τοιούτων αἴτιόν ἐστι τοῦ πράττειν τι ἢ μὴ πράττειν ἡμᾶς, ἀλλ᾿ ὑπολήψεις καὶ δόγματα.
Original text (Ancient Greek)